San skated for four hours 对划线部分提问
San skated for four hours 对划线部分提问
We can eat for two hours here.对划线部分提问 划线部分:for two hours
the are twenty-four hours in a day.(对划线部分提问:twenty-four)
We play volleyball for two hours.(对划线部分提问)划线部分是two hours
We play volleyball for two hours.(对划线部分提问)
I have math for two hours对画线部分提问(划线部分是for two hours )
he skated for four hours 为什么加for
he`s been studying there for two whole hours对划线部分提问.划线部分:for
she always dances for two hours.(对划线部分提问,划线部分为for two hours)
I have art lessons for tow hours 划线部分是for tow hours ,对划线部分提问
My parents watch TV for two hours every day.(对划线部分提问)划线部分
I skated for four hours与I have been skating for four hours的区